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Gaggia Nuova Eta restoration project
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iko
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Joined: 30 Aug 2013
Posts: 47
Location: Toronto
Expertise: Just starting

Posted Tue Sep 17, 2013, 7:14pm
Subject: Gaggia Nuova Eta restoration project
 

Came across a one group Gaggia Nuova Eta at a good price. Thought I'd get it as a long term project. Couldn't test it, but all the parts seem to be there. Seems to need a lot of work.

Facts:

  • operating voltage: 220V
  • rated power: 1350W
  • heater elements resistance, measured cold: 119, 123, and 125 ohms; they are connected in parallel, resulting in a resistance of about 41 ohms which sounds about right 220^2/41 = 1180W (Power = Voltage squared / Resistance)


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iko
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Joined: 30 Aug 2013
Posts: 47
Location: Toronto
Expertise: Just starting

Posted Tue Sep 17, 2013, 7:24pm
Subject: Re: Gaggia Nuova Eta restoration project
 

Taking it apart.

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iko
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Joined: 30 Aug 2013
Posts: 47
Location: Toronto
Expertise: Just starting

Posted Tue Sep 17, 2013, 7:27pm
Subject: Re: Gaggia Nuova Eta restoration project
 

The Gaggia make pump is separate, 220V as well.

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iko
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Posts: 47
Location: Toronto
Expertise: Just starting

Posted Tue Sep 17, 2013, 7:29pm
Subject: Re: Gaggia Nuova Eta restoration project
 

Opening up the boiler didn't go very well. Three bolts snapped. They seemed to turn fine, but that was because they broke.

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iko
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Joined: 30 Aug 2013
Posts: 47
Location: Toronto
Expertise: Just starting

Posted Tue Sep 17, 2013, 7:37pm
Subject: Re: Gaggia Nuova Eta restoration project
 

How to get out the broken bolts? Drill right through the middle of the bolt with larger and larger bits, until there's very little left of the original bolt. Pull out the empty shell of the bolts somehow. Well, easier said then done. One bolt was drilled slightly off center. The other two, although drilled right through the center, and only a thin outer shell left, couldn't get the remainder of the bold to budge. So I made a thin chisel out of a punch, and sculpted them out of the hole, as careful as possible. The original threads got damaged, of course. I redid all the threads with the right size tap, which was M10x1.5 but the three holes that were damaged I don't trust to torque the new bolts as tight as the others. I'm thinking maybe I should use some JB weld to reinforce the threads? Not sure. Maybe the lid will not leak even when only lightly torquing the three problematic bolts.

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iko
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Joined: 30 Aug 2013
Posts: 47
Location: Toronto
Expertise: Just starting

Posted Tue Sep 17, 2013, 7:39pm
Subject: Re: Gaggia Nuova Eta restoration project
 

The other "fixed" hole.

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adpopulum
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Joined: 12 Aug 2010
Posts: 1
Location: Toronto, Canada
Expertise: Just starting

Posted Wed Apr 16, 2014, 11:33am
Subject: Re: Gaggia Nuova Eta restoration project
 

So what happened? Did you ever complete this?
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